Daylight projection unit drive - has projection program incorporated into projection foil and power system to move program relative to diaphragm

摘要

A daylight projector drive system, having an optico-electrical control system which operates via a projection programme incorporated into the transparent projection foil along one of its long edge, has a shutter or diaphragm blade designed to permit only part projection of the control program. The program support moves relative to this blade or plate at a continuous rate, powered by an electric motor drive system which is controlled through the operation of the optico-electronic control device.